Skip to Main Content

LF174A-100 1 1/4

Part of the LF174A Series

Ordering Code: 0121522

UPC: 098268586220

Lead Free: YES

1 1/4 In Lead Free Boiler Pressure Relief Valve 100 psi

This 1 1/4 inch lead free boiler pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a lead free body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief, not as an operating control. The pressure setting is 100 psi (689.5 kPa), with corresponding ratings of 4,399,000 BTU/hr.

Product Features

  • Spring loaded
  • Non mechanical seat-to-disc alignment will not stick or freeze
  • Lead free body
  • Automatic reseating
Body Material Lead Free Copper Silicon Alloy
Brand Name Watts
EANUCCCode 098268586220
Inlet Connection Size 1 1/4 IN
Inlet Connection Type Female Threaded
Inlet Thread Type NPT
Lead Free YES
Maximum Temperature-Fahrenheit 250
Maximum Working Pressure-PSI 75
Outlet Connection Size 1 1/4 IN
Outlet Connection Type Female Threaded
Outlet Thread Type NPT
Part Number 0121522
Pressure Range 30 to 150 PSI
Pressure Relief Setting-PSI 100
Pressure Steam Discharge Capacity 4399000 BTU per hour at 100
Protection Type Pressure
Series LF174A